Railway-car-heating apparatus.



No. 707,36]. I Patented Aug. 19, I902.

J. u. 0. SEARLE, news.

7 I. E. SEABLE Exacut'rix. RAILWAY DAB HEATING APPARATUS.

(Application filed Hal 23. 1888. Renewed Aug. 26, 1898.)

(No Model.) 2 Shasta-Sheet l.

No. 707,36I. Patented Aug. [9, I902.

J. 0. C.- SEARLE, Decd.

l. E. SEARLE. Executrix. RAILWAY GAB HEATING APPARATUS.

(Application filed Mar. 28, 1888. Renewed Aug. 26, 1898.) (No Model.) Q) V5heb$-$heet 2;

m: NORRIS vsranSbo'. Puo'ro. c.

NITED STATES P TENT OFFICE.

JOHN Q. '0. SEARLE, OF CHICAGO, ILLINOIS; JULIA E. SEARLE EXECUTRIX OF SAID JOHN Q. G. SEARLE, DECEASED.

RAlLWAY-CAR-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 707,361, dated August 19, 1902. Application filed March 23,1888. Renewed August 26, 1898. Serial No. 689,616. (No model.)

.To all whom it may concern: ative connection with the main source of heat- Be it known that I, JOHN Q. 0. SEARLE, a citisupply. zen of theUnited States, residing at Chicago, The operative connection or contact may in the oountyof Cook and State of Illinois, be effected in various ways-such, for in- 55 have invented new and useful Improvements stance, as letting the heat derived from a in Railway-CarIleatingApparatus, of which main or prime source of heat-supply be carthe following is a specification. ried through a pipe or passage containing the- This invention relatesto that class of circirculating liquid, or, which is the reverse culatory systems in which a liquid after beof this,by letting the steam derived from a 60 1o ingheated andfreed of air and' steam may main or prime source of steam-supply be carbe employed for warming purposes in railried into a pipe or passage which incloses a way-cars and in other structures when reportion .of the system containing the circuquired, the heat being derived from a main lating liquid. Provision is also made for or prime source of heat-supply, preferably heating said liquid by heat derived from an 65 I5 from a steam-boiler or other suitable heatemergency heater in case of atemporary failgenerator. ure of the heat derived from said prime source In carrying out my invention I preferably of heat-supply. employ a circulatory system that includes a Referring to the drawings, Figure 1 is a heat-radiating portion and has an ascending perspective view of myimproved railway-car- 7o pipe on one side thereof and a descending heating apparatus, showing a means for pipe on the other side thereof, a heater lotransferring heat derived from a main source cated at substantially the lowest point of the of heat-supply into operative contact with the circuit, and means for transferring" heat decirculating liquid by which said car or other rived from a main source of heat-supply into structure is heated. Fig. 2 is a similar view 75 operative contact with the circulating liquid illustrating a modification hereinafter de-' in said heater, and in some instances, if described. Fig. 3 is adetailsectional view of the sired, I may employ a circulatory system that heater shownin perspective in Fig. 2, located includes a heat-radiating portion and has an' .at substantially the lowest point of the cirascending pipe on one side thereof and a decuit. 80 o scending pipe on the other side thereof, a The numerallrepresents the floor ofarailheater in the ascending pipe or upon one side way-car or other structure to be heated; 2, a thereof, and a second heater located below main heat-supply pipe or other suitable the first-named heater and at substantially means provided with detachable couplings 3, the lowest point of the circuit. These heatwhereby heat derived from a main or prime 85. ers or either of them may be of any desired source of heat (preferably steam) supply may charaoterthat is to say, the heat may be de be transferred into operative contact with the rived from any suitable source; but when circulating liquid by which said car or other my invention is employed for warming railstructure is heated. way-cars it is preferable that one or more of v 4:, Figs. 1 and 2, respectively, represents the 0 said heaters derive the'heat from a common ascending pipe on one side, and 8 a descendsourcesuch, for instance, as the locomoin'g -pipe on the other side, of a circulatory tive-boiler, which is the most convenient, or a system, both of said pipes having communispecial heatgenerator adapted to heat the cation at their vupper ends, preferably by circulating liquid-and to this end I prefermeans of a liquid-dividing fitting 5 and a 5 5 ably employ a main steam-pipe or other suitpipe 10, with an expansion-chamber 9, located able mechanism adapted'to be connected to at an elevated point,whereby' said liquid a main or prime source of heat-supply and after being heated may be freed of air and also'with one or a plurality of heaters adaptsteam, as required. ed to impart heat to the circulating liquid. 11 is a funnel-cock for supplying any loss 100 In practice one or more heaters may imof liquid when required, and 12 is a safetypart heat to the said liquid by being in opervalve to prevent explosions.

6 is a branch descending pipe having its upper end connected to said fitting 5 and its lower end to a liquid-uniting fitting 7, whereby the heating capacity of the system may be increased without enlarging either of the heaters.

The circulating liquid may be properly and sufiiciently heated by heat derived from a main or prime source of heat (preferably steam) supply broughtinto operative contact With'the circulating liquid in the heater 15, or said liquid may be heated by heat derived from a main or prime source of steam-supply brought into operative contact with a portion of said system containing the circulating liquid in the heater 15 as shown in Fig. 3 of the drawings.

In Fig. 1 is represented a circulatory system that has an ascending pipe 4on one side thereof and a descending pipe 8 on the other side thereof, both of said pipes, preferably by means of said fitting 5 and pipe 10, having communication at their upper ends with said chamber 9, before referred to, and at their lower ends with a heater 15, located at substantially the lowest point of the circuit, whereby said liquid may be heated and afterward freed of air and steam before being employed for warming railway-cars and other structures to be heated. 20, Fig. 1, represents a branch steam-pipe or other suitable means adapted for having communication with a main or prime source of heat (preferably steam) supply and for transferring heat into operative contact with the circulating liquid in said heater 15 and is provided with a hand-valve 21 for regulating the supply of heat to the said liquid, and by means of a short pipe 23 the condensed steam may be conducted into a steam-trap 24 when required.

25, Figs. 1 and 2, represents the combustionchamber of an emergency heater 26, inclosing a portion of the system containing the liquid to be heated.

20 Figs. 2 and 3, respectively, represents a branch steam-pipe adapted to have communication with a main or prime source of steamsupply and for transferring heat derived therefrom into operative contact with the circulating liquid in said heater 15 and is pro vided with a hand-valve 21 for regulating the supply of heat to said liquid, and by means of a short pipe 23 the condensed steam may be conducted into a steam-trap 24 when required.

14, Fig. 1, represents a heater of similar construction to that of heater 15, before referred to, but located above said first-named heater, and there may be contained in each of said heaters in operative contact with the circulating liquid a steam-heating pipe 13 or other suitable means adapted for heating the said liquid, and a branch steam-pipe 16 is pro- 6 5 vided with a hand-valve 17 for regulating the supply of heat to the said liquid, and by means of a short pipe 18 the condensed steam may be conducted into a steam-trap 19, as required.

14 Fig. 2, represents a heater of similar construction to that of heater 15 but located above said heater and adapted for receiving steam derived from a main or prime source of steam-supply and to transfer heat derived therefrom into operative contact with the circulatory system in said heater 14 which is supplied through a branch steampipe 16 provided with a hand-valve 17 for regulating the supplyof heat to the circulating liquid, and by means of a short pipe 18 the condensed steam may be conducted into a steam-trap 19 as required, and 25, Figs. 1 and 2, respectively, represents the combustion-chamber of an emergency heater 26, inclosing a portion of said system containing the circulating liquid to be heated.

A valved pipe 27, Fig. 2, may be connected with a pump to fill the pipes of the system with water or other liquid, and avalve 28 may be placed in each of the pipes 8 and 6, Fig. 2, for controlling the liquid while filling the pipes of the system. When the system is connected with a main or prime source of heat-supply, the liquid can be properly heated, preferably by steam supplied to the pipe or passage 13 in the heaters 15 and 14, respectively, or by steam supplied to the chambers or passages of the heaters 15 and 14 respectively.

The heaters 15 and 14, Fig. 1, or the heaters 15 and LP, Figs. 2 and 3, respectively, may separately or simultaneously form part of a single-flow system and may be arranged so the Water or other liquid before passing to the pipes or radiators may be heated in either of the ways hereinbefore described.

The invention set forth herein and shown is not confined to the particular details of construction described, as the principle of my invention may be embodied in various other obvious forms of apparatus different from that illustrated and described and that the location of the various parts within the limitations specified in the appended claims as to the location of the heaters one below another and at substantially the lowest point of the circuit may also to a considerable extent be Varied without departing from the principle of my invention, and the heater 26 may or may not be employed as a secondary source of heat-supply, and of course it may be employed independently of said steam-supplyas, for instance, when a car is side-tracked and it is desirable to have it warmed before it is coupled into a train. It will also be understood that the expression used'herein to designate the heaters or their location does not necessarily imply a heater inclosed within a pipe or passage, but

'is to be understood as a term employed in the art to embrace a heater of any suitable description adapted to impart its heat to the liquid in the pipes or passages of the system, and, further, that the prime source of heat-supply comprises a heat-generator of any description or arrangement so long as the heat generated therein or thereby may be conveyed or transmitted from said prime source of heat by any suitable means adapted to impart heat to the circulating liquid.

What I claim, and desire to secure by Letters Patent of the United States, is

l. The combination, of acirculatory system that includes a heat-radiating portion and has an ascending pipe on one side thereof and a descending pipe on the other side thereof, a heater in the ascending pipe or upon one side thereof, and a second heater located below the first-named heater and at substantially the lowest point of the circuit.

2. The combination, of a circulatory system that includes a heat-radiating portion and has an ascending pipe on one side thereof, a descending pipe on the other side thereof and an expansion chamber located above said pipes and having communication therewith,

an emergency heater having a combustion- JOHN Q. C. SEARLE.

Witnesses:

, WM. F. MEYER, V F. D. WULFF. 

